The $S.I.$ unit of gravitational potential is
$J$
$J{\rm{ - }}k{g^{ - 1}}$
$J{\rm{ - }}kg$
$J{\rm{ - }}k{g^{ - 2}}$
$Erg - {m^{ - 1}}$ can be the unit of measure for
The velocity of a particle depends upon the time $t$ according to the equation $v = \sqrt {ab} + bt + \frac{c}{{d + t}}$ The physical quantities which are represented by $a, b, c$ and $d$, are in the following order
The unit of permittivity of free space ${\varepsilon _0}$ is
Which of the following is not equal to watt
Which of the following is not the unit of time